| 101 | Harrod Leasing | Edmond, OK 73034 | Oil & Gas Operator | Aug 2025 |
| 102 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Aug 2025 |
| 103 | Hill Oil Company Inc | Shawnee, OK 74804 | Oil & Gas Operator | Aug 2025 |
| 104 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
| 105 | HRC Production Co | Houston, TX 77024 | Oil & Gas Operator | Aug 2025 |
| 106 | Hsumy Oil & Gas, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2007 |
| 107 | Jan Oil Company | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 108 | Jefferson Co LLC (The) | Corinth, TX 76205 | Oil & Gas Operator | Aug 2004 |
| 109 | Jerry Scott Drilling Company Inc | Ada, OK 74821 | Oil & Gas Operator | Apr 2025 |
| 110 | JMC Exploration Inc | Dallas, TX 75225-5803 | Gas Operator | Jan 2007 |
| 111 | Jones Energy, LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2025 |
| 112 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2025 |
| 113 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 114 | Keith F Walker Oil & Gas Company LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2025 |
| 115 | Kerr McGee Rocky MTN Corp | Denver, CO 80202-5736 | Oil & Gas Operator | Mar 2015 |
| 116 | Kingery Drilling Co., Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Sep 2025 |
| 117 | Laran Operating LLC | Dover, OK 73734-0057 | Oil & Gas Operator | Mar 2015 |
| 118 | Larkin Energy Company Inc | Sasakwa, OK 74867 | Oil & Gas Operator | May 2022 |
| 119 | Larkin Oil Co | Sasakwa, OK 74867 | Oil & Gas Operator | Aug 2015 |
| 120 | LCB Resources LLC | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Sep 2025 |
| 121 | Lewis John L Well Service | Sasakwa, OK 74867 | Oil Operator | May 2013 |
| 122 | M E Klein & Associates LLC | Washington, OK 73093-4663 | Oil & Gas Operator | Sep 2025 |
| 123 | Marbet LLC | Edmond, OK 73013-6691 | Oil & Gas Operator | Sep 2025 |
| 124 | Mason Robert A Production Co | Edmond, OK 73013-9102 | Oil & Gas Operator | May 2013 |
| 125 | Matthews Oil & Gas | Ada, OK 74820 | Oil & Gas Operator | Sep 2025 |
| 126 | Matthews Oil & Gas LLC | Weleetka, OK 74880-7312 | Oil & Gas Operator | Apr 2020 |
| 127 | Mayabb Oil Company Inc | Tulsa, OK 74105-5158 | Oil & Gas Operator | Jul 2025 |
| 128 | Mega Resources Inc | Dallas, TX 75225-0186 | Oil & Gas Operator | Jan 2001 |
| 129 | Mercer Pet Management Inc | Edmond, OK 73013-6677 | Oil & Gas Operator | Jan 2011 |
| 130 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 131 | Mesa Operating LP | Irving, TX 75039-3746 | Oil & Gas Operator | Oct 2010 |
| 132 | Michael Goodnight Operating LLC | St Louis, OK 74866 | Oil & Gas Operator | Aug 2025 |
| 133 | Midcontinent Oil & Gas Company | Phoenix, AZ 85022-6180 | Oil & Gas Operator | Jun 2012 |
| 134 | Midwest Energy Corporation | Tulsa, OK 74105-6083 | Oil & Gas Operator | Aug 2016 |
| 135 | Midwest Operating Company Inc | Tulsa, OK 74105-6059 | Oil & Gas Operator | Nov 1999 |
| 136 | Miller Exploration Company | Tulsa, OK 74136-1020 | Oil & Gas Operator | Mar 2015 |
| 137 | Moran-K Oil LLC | Seminole, OK 74868 | Oil & Gas Operator | Sep 2025 |
| 138 | Moran-Kahn Oil | Seminole, OK 74868 | Oil & Gas Operator | Mar 1992 |
| 139 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2025 |
| 140 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 141 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Aug 2025 |
| 142 | NFC Petroleum Corporation | Tulsa, OK 74121 | Oil & Gas Operator | Jun 1996 |
| 143 | O G & E | Oklahoma City, OK 73124 | Oil & Gas Operator | Feb 2014 |
| 144 | Oakland Petroleum Oper Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 145 | Oexco, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 146 | Oklahoma Oil & Gas MGMT Inc | Edmond, OK 73083-6786 | Oil & Gas Operator | Aug 2025 |
| 147 | Ovintiv Mid-Continent Inc. | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Aug 2025 |
| 148 | Owl Creek Production Co., Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2006 |
| 149 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 150 | Pablo Energy II, LLC | Amarillo, TX 79105 | Oil & Gas Operator | Aug 2025 |
| 151 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 152 | Paluca Petroleum Inc | Holdenville, OK 74848 | Oil & Gas Operator | Aug 2025 |
| 153 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Dec 2025 |
| 154 | Park Avenue Exploration Corp | Oklahoma City, OK 73102-5604 | Oil & Gas Operator | Sep 2011 |
| 155 | Payne Exploration Company | Crescent, OK 73028 | Oil & Gas Operator | Aug 2025 |
| 156 | Payne W C Family Trust | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Mar 2015 |
| 157 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 158 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 159 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Dec 2025 |
| 160 | Positive Energy LLC | Ada, OK 74820 | Oil & Gas Operator | Aug 2025 |
| 161 | Pre-MC Inc | Allen, OK 74825 | Oil & Gas Operator | Aug 2025 |
| 162 | Prentice Benny P | Allen, OK 74825-0247 | Oil & Gas Operator | Feb 2007 |
| 163 | Prentice Bro Oil Operators | Allen, OK 74825 | Oil & Gas Operator | Apr 2014 |
| 164 | Prentice, Napier & Green, Inc. | Oklahoma City, OK 73142 | Oil & Gas Operator | Sep 2025 |
| 165 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 166 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 167 | Questar Explor & Prod Co | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2017 |
| 168 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Aug 2025 |
| 169 | Red Rock Resources, L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Aug 2025 |
| 170 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 171 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 172 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 173 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 174 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 175 | Roberson David A | Ada, OK 74821-0008 | Oil & Gas Operator | Jul 2010 |
| 176 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 177 | Rose Rock Resources Inc | Wagoner, OK 74467-8362 | Oil & Gas Operator | Aug 2025 |
| 178 | Roxanna Oil Company | Oklahoma City, OK 73120-2717 | Oil Operator | Aug 2016 |
| 179 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |
| 180 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 181 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2025 |
| 182 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Dec 2025 |
| 183 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 184 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 185 | Schmid Properties, Inc. | Hico, TX 76457 | Oil & Gas Operator | Dec 2025 |
| 186 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 187 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 188 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 189 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 190 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Aug 2025 |
| 191 | Shields Well Service Corp | Stroud, OK 74079-3410 | Oil & Gas Operator | Dec 2017 |
| 192 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Dec 2025 |
| 193 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 194 | Sogc, Inc. | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Oct 2025 |
| 195 | Southern Resources Inc | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Sep 2025 |
| 196 | Southwest Exploration Company | Oklahoma City, OK 73132-2230 | Oil & Gas Operator | Jun 2017 |
| 197 | SP Energy Development Company | Seattle, WA 98101-3277 | Oil & Gas Operator | Mar 2015 |
| 198 | Special Energy Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Dec 2025 |
| 199 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Sep 2025 |
| 200 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Sep 2025 |